Electric alarm-clock.



No. 815,072 PATBNTED MAR. 13, 1906.

G. G. DARGHB, DEG'D.

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ELECTRIC ALARM CLOCK.

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No. 815,072. PATENTED MAR. 13, 1906.

G. U. DARGHE, DEC'D.

, A. Y DABGHE, nxnou'rmx.

ELECTRIC ALARM CLOCK.

APPLICATION FILED 1173313, 1904.

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AUGUSTA Y. DARCHE, Ol CHlCAGO, ILLINOIS, EXECUTRIX OF GEORGE C. DARCHE,DECEASED.

ELECTRIC ALARM-CLOCK.

Specification of Letters Patent.

zatenteci Maren 13, 1906.

Application filed June 13,1904. Serial No. 212,328.

To all whom it may concern:

Be it known that GEORGE C. DAROHE, deceased, prior to his death being acitizen of the United States, and a resident of Chicago, in the countyof Cook and State of Illinois, invented certain new and useful Imrovements in Electric Alarm-Clocks; and AU- GUSTA Y. DAROHE, hisexecutrix, do hereby declare the followin to be a full, clear, and exactdescription 0 the invention, such as will enable others skilled in theart to which it a pertains to make and use the same.

his invention relates to the class of electric alarm-clocks in which theoperation of an ordinary mechanical alarm is caused to close an electriccircuit and to cause thereby an electric alarm; and the object of theinven- "tion is to provide a simple, cheap, and efficient means by whichan ordinary mechanical alarm-clock may be connected with an electricalarm without taking the clock apart and without necessarily solderingjoints and without introducing Wires or other mechanism into the worksor movement of the clock.

B this invention any mechanical alarmcloc may be connected with anelectric alarm without removing the clocks case and without insertingany wire or other mechanism within it, the only alteration, if any, inthe clock consisting in the substitution for the winding-key of thealarm of an arm, of metal, adapte to be revolved by the arbor and tomake contact with the pole of a battery. The clock may at any timewithout alteration or repairs be removed from the frame and used asoriginally designed for a mechanical alarm-clock. No wires or otherdevices need be removed or replaced. The said arm may be used as awinding-key or may be so attached to the winding-ke by a clamp, catch,or spring as to permit t e key to remain in osition so the arm may bedetached there cm and leave the clock precisely as it came from themanufacturer, all of which will more clearly a pear from the drawingsand specifications winch follow.

The invention consists in a new arrangement and disposition of theessential elements and the omission of those not required,whereby a newcombination is effected and unnecessary Wires and contacts areeliminated and the tendency and opportunities for disarrangement andconsequent inefficiency are avoided and cheapncss and simplicity ofconstruction and maintenance are attained and reliability of operationis increased.

. In the drawings the same reference-numerals are used in the severalfigures to indicate the same parts.

Figure 1 re resents a rear view of device embodying t 's invention. F i2 represents a front view of the same. 1* ig. 3 shows a metal frameadapted to receive and support and connect the parts of this device, asshown in Figs. 1 and 2. Fig. 4 is a side view of the battery andelectric bell and connections separated from the clock for greaterconvenience of illustration.

In the figures, 5 is an ordinary mechanical alarm-clock supplied withthe usual and ordinary arbor for winding the mechanical alarm thereof.

6 is a metal arm attached to the windingarbor of the alarm in place ofthe key.

7 is a common electric battery. 8 is a binding-post attached to thecarbon of the same. 9 is a binding-post attached to the zinc of thesame.

10 is an ordinary electric or magnetic bell and appurtenances.

11 1S a block of insulating material between the battery and frame, Fig.3.

12 is a binding-post of the magnet appur tenant to 10.

13 is a Wire connecting 8 and 12.

14 is a metallic bar attached to the binding-post 9 and extending acrossthe path of the arm 6 in its revolution.

15 is a thimble of insulating material loosely fitted on the bar 14,adapted to be adjusted thereon.

16 is a portion of the frame for the clock movable laterally upon itsbase, and thereby adapted to be forced against the clock and to pressthe same firmly against the opposite portion of the frame 17.

17 is a portion of the frame, made of metal, adapted to support theelectric bell and batter and to connect electrically the clock an themagnet of the electric bell.

18 is an ordinary tap, threaded to fit and screwed on the winding-arborof the alarm, and into which by means of a proper screwthread on its endthe arm 6 is screwed.

19 denotes an ordinary electromagnet such as is commonly used withelectrical alarms, connected, by means of the bindin post 12 and theframe 17, with the electric ion 10.

20 is the inner surface of the adjustable portion 16 of the frame,curved and adapted to fit the circumference of the clock. 21 is theinner surface of the opposing portion 17 of the frame, similarly curved.

22 is a set-screw or bolt and nut adapted to adjust the adjustableportion 16 of the frame 2 5 manner. In t e drawings it is shown to beinserted into the insulating-block 11 to insure greater rigidity. Theinsulating-thimble 15 is placed on the metal bar 14. The key to thewinding arbor havin been removed, the metal tap 18 is screwe on thearbor and the metal arm 6 is screwed into the ta and is bent at asuitable an 1e and extende to such a length that it is a apted to comeinto contact with the bar 14 in the course of a revolution, as shown bythe dotted lines in Fig. 1. The clock is placed in position in the framebetween the adjustable portion 16 and the fixed portion 17. Thead'ustable portion of the frame 16 is forced y any suitable meansagainst the side of the clock, pressin the clock firmly against theopposing curve face of the stationary metal portion of the frame, towhich an electric bell is attached and in electrical contact. The alarmis wound and set in the usual manner, as contemplated b its structurefor a mechanical alarm. t the time set it is discharged and in that oeration by the revolution of the winding-ar or the arm 6 is revolved tothe position shown by the dotted lines in Fig. 1 and makes contact withthe bar 14, completing the electric circuit by wa of the clock 5, thestand 17, the bell 10, an the wire 13. The alarm will continue to sounduntil the battery is exhausted, unless the circuit is broken. This maybe done by separating the metal arm 6 from the metal bar 14 and movingthe insulating-thimble 15 into the position shown by the dotted lines inFig. 4, interposed to receive the contact of the arm 6. The thimble 15is formed with a suitable groove or shoulder to receive the arm 6, adated to retain it in its insulating position unti released by removingthe arm 6, when it falls into its original position by its own weightand leaves the bar 14 again exposed to receive the contact of the arm 6.

It is not intended to limit this atent to the prec'eise forms shown andescribed. The orms here shown illustrate the principle. In detail theymay be varied in many ways. For example, the bar 14 may be of greatvariety of forms and ma be attached to the battery in a great manyifferent ways. It may consist of a short straight bar or a loop or another form, de ending upon the position 0 the battery with reference tothe clock, every alteration of which would re- ?uire a correspondinmodification of the orm of the bar 14 an the arm 6 to so adapt them thatthe arm 6 would make contact with the bar 14 as the former revolved. Thebar may be entire] omitted and contact made by the arm 6 irectly uponthe pole of the battery. So, also, the method of attaching the arm 6 tothe windin -arbor may be various. In the drawings t e key is shown tohave been removed and the threaded tap inserted in its stead, and athread being made up on the end of the arm 6 the arm 6 is screwed intothe tap; but it is obvious that this arm may be attached to the arbor ina variety of ways or to the key without removing the same. It might besplit for a suitable distance at one end and the ke inserted between thesevered portions. It may be attached by a clamp or by a set-screw orsoldered on or in any other manner by which it may be adapted to revolvewith the windingarbor and make due electrical contact with the battery;so, also, as to the electrical bell, which may be, if desired, groundeddirectly upon the clock-case in any desired manner .by direct contact orin any other way without the use of the frame, Fig. 3.

In the drawin s a metal frame is introduced as a common e ectricalground for the bell and clock; but this is not essential, as the framemay beof any material, so long as the electrical contact is establishedbetween the bell and the case of the clock by its means. An ornamentalframe of Wood or any nonconducting material ma be used, provided a stripor section of meta is introduced, making connection between the clockand the magnet.

In operation the current is taken off binding-post 8, flows through wire13 to binding- 0st 12 on the bell, through the coils in the Bell, thento the frame 17 from the other bindin -post 12, thence through arm 6,bar 14, an back to thebattery through bindingpost 9. When the mechanicalalarm mechanism brin s arm 6 into contact with bar 14, the current eginsto flow and continues to flow and operates the alarm mechanism until theinsulatin -thimble 15 is interposed between arm 6 an bar 14. In this waya continuous alarm is given and continues to operate until it ismanually stopped.

What is claimed isl. The combination with a clock alarm mechanism, andan arm adapted to be moved thereby, of an electric signal, a circuit forsaid signal including said arm, a source of current, a stationaryelectrode arranged in the iath of movement of said arm and an insuatingsleeve movably mounted on said stationary electrode and adapted tobe positioned between said arm and stationary electrode for preventingcontact therebetween and thus maintaining the circuit open.

2. A si nal mechanism, comprising a mechanical a armclock, a metal armconnected to the alarm mechanism of said alarm-clock and adapted to bemoved thereby, an electric signal, a circuit for said signal including asource of current, said electric signal, a stationary contact secured tosaid source of current and having sto is formed thereon,amovable contacton sai mechanical alarm-clock, and an insulating-sleeve adjustablymounted on the said stationary contact, the said sleeve being limited inits movement by said stops.

3. The combination with a clock alarm mechanism, and an arm adapted tobe moved thereby, of an electric signal, a circuit forsaid signalincluding said arm, a source of current, a stationary contact arrangedin the path of movement of said a'rm, and an insulatin sleeve mounted onsaid stationary contact formed with means projecting therefrom,

adapted to engage said movable arm for maintaining said sleeve inposition to hold apart the said contact-points.

4. The combination with a clockalarm mechanism,and an arm ada ted to bemoved thereby, of an electric signa ,a circuit for said signal includingsaid arm, a source of current a stationary contact positioned in theatho said arm, an insulatin -sleeve carried by said contact, saidcontact ing arranged to ermit said sleeve to be moved by gravity w onsaid arm is on the sleeve adapted to enga c the arm for sustaining thesleeve between the arm and contact when the arm is in contact with thesleeve.

5. The combination with a clock-alarm mechanism,and an arm adapted to bemoved thereby ,of an electric signal, a circuit for said signalincluding said arm, a source of current, a stationary contact arrangedin the path of movement of said arm and an insulatingsleeve mounted onsaid stationary contact formed with a. flange on one end thereof, saidflange being adapted to engage said movable arm for maintaining saidsleeve in position between the contacts.

Dated at Chicago, Illinois, this 27th day of May, A. D. 1904.

AUGUSTA Y. DARCHE, Ewecutria: of George C. Darclie, deceased, in

senior.

Witnesses:

MARTIN A. Comma, SAML. J. Lmmsnn.

